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Total 4 documents matching your query.

1. [Amps] Help, My SB-220 is sick (score: 1): Author: Greg S <oldlongbeard@yahoo.com>; Date: Wed, 22 Jun 2005 18:35:58 -0700 (PDT); Well, after several years of good service, I have a problem. I turned the amp on tonight, and was greeted with a "whine" (for lack of better term), and I thought (imagined?) I saw a spark from undern; /archives//html/Amps/2005-06/msg00189.html (7,595 bytes)
2. Re: [Amps] Help, My SB-220 is sick (score: 1): Author: GGLL <nagato@arnet.com.ar>; Date: Thu, 23 Jun 2005 00:01:12 -0300; I should start lifting the HV connection to the bottom of the plate choke, then power on to see what happen, a (maybe) tube related problem or a power supply problem. best regards Guillermo - LU8EYW.; /archives//html/Amps/2005-06/msg00190.html (8,609 bytes)
3. Re: [Amps] Help, My SB-220 is sick (score: 1): Author: Greg S <oldlongbeard@yahoo.com>; Date: Tue, 26 Jul 2005 18:13:33 -0700 (PDT); Well, the saga continues. Please see my initial description of the problem, and note the following found tonight: There is an arc occurring upon power-on somewhere on the Zener Diode ZD-1. The HV is; /archives//html/Amps/2005-07/msg00326.html (6,786 bytes)
4. Re: [Amps] Help, My SB-220 is sick (score: 1): Author: R.Measures <r@somis.org>; Date: Wed, 27 Jul 2005 07:49:55 -0700; Definitely not good. Ip in Rx means you likely have a grid-fil short, probably in V2. The short is the result of an intermittent parasite at c. 110MHz. In a stock SB-220, a grid-fil. shorted tube als; /archives//html/Amps/2005-07/msg00329.html (8,465 bytes)

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